Whistle



FIG. 1 is a top view of a whistle according to my new design;

FIG. 2 is an elevated front view of the whistle of FIG. 1;

FIG. 3 is an elevated side view of the whistle of FIG. 1;

FIG. 4 is an elevated rear view of the whistle of FIG. 1;

FIG. 5 is a perspective front view of the whistle of FIG. 1; and,

FIG. 6 is a perspective side view of the whistle of FIG. 1.

The broken lines provided for illustrative purposes only and form no part of the claimed design. In addition, the portions of the whistle that are not shown in the drawing do not form any part of the claimed design. 

The ornamental design of a whistle, as shown and described. 